Here's a nice one. I think this may be a picture of something I'm going to call "Unintentional Hidden Nudity". Excatly, what it sounds like, it's Hidden Nudity that isn't planned and occurs by the natural, unintentional placement of objects to hide the nudity. This is a perfect example. The girl probably didn't intend for the camera strap to cover her in this way, but it did anyway. Then again, maybe she did plan it out, what do I know?
Enjoy
Fango